chore: update flake inputs

- brew-src: 4.5.0 -> 4.5.2
- nix-homebrew, nixpkgs, unstable: updated to latest versions

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

flake.lock

@@ -19,16 +19,16 @@
     "brew-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1745912035,
-        "narHash": "sha256-qwLrR5iOcQMlwS0yrkcd0NRQvrmAXPOaiL6vxxzyIVA=",
+        "lastModified": 1746795192,
+        "narHash": "sha256-Cv+RXuzmn2iGBY2Ny/nXBTH+LFKDWIvMxf9a+btKI6M=",
         "owner": "Homebrew",
         "repo": "brew",
-        "rev": "3332d3331b56e0aff675d3816d8ebfe564075299",
+        "rev": "6f39076b3c2251994419215279d0525ef667fc31",
         "type": "github"
       },
       "original": {
         "owner": "Homebrew",
-        "ref": "4.5.0",
+        "ref": "4.5.2",
         "repo": "brew",
         "type": "github"
       }
@@ -696,11 +696,11 @@
         "nixpkgs": "nixpkgs_3"
       },
       "locked": {
-        "lastModified": 1746464788,
-        "narHash": "sha256-57lVFGLEGoKXQVSaQQQC+DFDYagUIG4rtEbc4S1nvH8=",
+        "lastModified": 1747444109,
+        "narHash": "sha256-fSufrKr8NdhLMuGZGwjGUfH+TIWrjFTRIBhgCRIyxno=",
         "owner": "zhaofengli-wip",
         "repo": "nix-homebrew",
-        "rev": "20e4702906fb0a8de16902621689cafef445a35d",
+        "rev": "159f21ae77da757bbaeb98c0b16ff2e7b2738350",
         "type": "github"
       },
       "original": {
@@ -799,11 +799,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1746557022,
-        "narHash": "sha256-QkNoyEf6TbaTW5UZYX0OkwIJ/ZMeKSSoOMnSDPQuol0=",
+        "lastModified": 1747862697,
+        "narHash": "sha256-U4HaNZ1W26cbOVm0Eb5OdGSnfQVWQKbLSPrSSa78KC0=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "1d3aeb5a193b9ff13f63f4d9cc169fb88129f860",
+        "rev": "2baa12ff69913392faf0ace833bc54bba297ea95",
         "type": "github"
       },
       "original": {
@@ -2818,11 +2818,11 @@
     },
     "unstable": {
       "locked": {
-        "lastModified": 1746663147,
-        "narHash": "sha256-Ua0drDHawlzNqJnclTJGf87dBmaO/tn7iZ+TCkTRpRc=",
+        "lastModified": 1747744144,
+        "narHash": "sha256-W7lqHp0qZiENCDwUZ5EX/lNhxjMdNapFnbErcbnP11Q=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "dda3dcd3fe03e991015e9a74b22d35950f264a54",
+        "rev": "2795c506fe8fb7b03c36ccb51f75b6df0ab2553f",
         "type": "github"
       },
       "original": {